Not really a mod, more of a repair. Had to rewire my entire Unichip harness. Apparently it sat too close to the engine block and caused a short. What a total PITA to find and diagnose. Re-soldered and weather-proofed every connection, even soldered on a new mini ATX connector. I’m 100% back in action, all 5 tunes are loaded back onto the Unichip, and even flashed the firmware to the latest revision.
24 pin mini ATX connector for the Q+ and Q4:
[IMG]
Wired in switches for all the LED lighting – 3 are used, one is a secret weapon that hasn’t been installed, yet. These switches are simple, on/off, and they are soldered on the back side, sharing a common ground. Several of them are wired to constant power, for use at car shows, etc.
LEDs were added to the glove box, cup holder, and backseat cup holders:
I also carbon fiber wrapped my steering wheel pieces, although the bottom piece is still not perfect, and may need to be redone.
I had to disassemble the HVAC controls, pull off the knobs, wrap the piece, and then assemble. 
Used red gap trim for the controls: 
